/* Copyright (c) 2008, The Visigoth Software Society
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright notices,
 *       this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name Visigoth Software Society, FreeCC, Sun Microsystems, Inc. 
 *       nor the names of any other contributors may be used to endorse 
 *       or promote products derived from this software without specific prior written 
 *       permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.visigoths.freecc.codegen.java;

import freemarker.template.*;
import org.visigoths.freecc.parser.Node;
import static org.visigoths.freecc.parser.FreeCCParserConstants.*;
import java.util.*;

public class CompilationUnit extends JavaCode implements TemplateHashModel {

    public CompilationUnit() {
        super(JJTCOMPILATIONUNIT);
    }
    
    @SuppressWarnings("deprecation")
    public TemplateModel get(String key) throws TemplateModelException {
        TemplateModel result = super.get(key);
        if (result == TemplateModel.JAVA_NULL && key.equals("packageDeclaration")) {
            return TemplateModel.NOTHING;
        }
        return result;
    }
    
    public String getPackageName() {
        PackageDeclaration jpd = getPackageDeclaration();
        return jpd == null ?
                null :
                    jpd.getPackageName();
    }
    
    public PackageDeclaration getPackageDeclaration() {
        Node first = this.jjtGetChild(0);
        return (first instanceof PackageDeclaration) ?
                (PackageDeclaration) first :
                    null;
    }
    
    public List<ImportDeclaration> getImportDeclarations() {
        ArrayList<ImportDeclaration> result = new ArrayList<ImportDeclaration>();
        for (Node child : this) {
            if (child instanceof ImportDeclaration) {
                result.add((ImportDeclaration) child);
            }
        }
        return result;
    }
    
    public List<TypeDeclaration> getTypeDeclarations() {
        ArrayList<TypeDeclaration> result = new ArrayList<TypeDeclaration>();
        for (Node child  : this) {
            if (child instanceof TypeDeclaration) {
                result.add((TypeDeclaration) child);
            }
        }
        return result;
    }
    
    public void addImportDeclaration(ImportDeclaration decl) {
        ListIterator<Node> iterator = iterator();
        Node n = null;
        while (!(n instanceof TypeDeclaration)) {
            n = iterator.next();
        }
        if (iterator.hasPrevious()) {
            iterator.previous();
            iterator.add(decl);
        } else {
            prepend(decl);
        }
    }
    
}
